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Note 19 – Derivatives (Tables) | 6 Months Ended
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Oct. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
[custom:ScheduleOfAssumptionsUsed2TableTextBlock] |
|  |  | October 31, 2023 |  |  |  | April 30, 2023 |
Risk-free interest rate |  |  | 4.88 – 5.54% |  |  |  | 2.83 – 4.51% |
Expected dividend yield |  |  | — |  |  |  | — |
Expected term (in years) |  |  | 1.92 – 2.50 |  |  |  | 2.42 – 3.50 |
Expected volatility |  |  | 80.69 – 107.90% |  |  |  | 138.49 – 235.23% |
Schedule of Derivative Liabilities at Fair Value [Table Text Block] |
|  | October 31, 2023 |  | April 30, 2023
Balance, beginning of period |  | $ | 588,205 |  |  | $ | 1,607,497 |
Additions |  |  | — |  |  |  | — |
Eliminated upon conversion of notes/exercise of warrants |  |  | — |  |  |  | — |
Changes in fair value |  |  | (189,002 | ) |  |  | (1,019,292 | )
Balance, end of period |  | $ | 399,203 |  |  | $ | 588,205 |

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